Corrosion behavior of high-level waste container materials Ti and Ti-Pd alloy under long-term gamma irradiation in Beishan groundwater

doi:10.1088/1674-1056/abf03b

CORC > 海洋研究所 > 中国科学院海洋研究所

	Corrosion behavior of high-level waste container materials Ti and Ti-Pd alloy under long-term gamma irradiation in Beishan groundwater
	Wei, Qianglin 1,2; Li, Yuhong 1; Huang, Yanliang 3; Yang, Dongyan 1; Yang, Bo 2; Liu, Yibao 2
刊名	CHINESE PHYSICS B
	2021-05-01
卷号	30 期号:5 页码:8
关键词	gamma-irradiation corrosion high-level waste container material
ISSN号	1674-1056
DOI	10.1088/1674-1056/abf03b
通讯作者	Li, Yuhong(liyuhong@lzu.edu.cn) ; Liu, Yibao(ybliu@ecut.edu.cn)
英文摘要	Titanium and titanium-palladium alloys are important potential materials for nuclear waste container, which will endure both intense gamma-irradiation and groundwater erosion. Therefore, it is very important to investigate the corrosion behavior of the container materials. In this research, the cumulative dose effect of TA8-1 type titanium-palladium alloy (TA8-1) and TA2-type pure titanium (TA2) under gamma-irradiation was studied based on the geological disposal of nuclear wastes. The irradiation experiments were performed at room temperature using Co-60 gamma sources with a 5.0-kGy.h(-1) intensity for 40, 80 or 160 days, respectively. The pH value and conductivity of Beishan groundwater were investigated. The results showed that the pH value changed from alkaline (8.22) to acidic (2.46 for TA8-1 and 2.44 for TA2), while the un-irradiated solution remained alkaline (8.17 for TA8-1 and 8.20 for TA2) after 160 days. With the increase of irradiation dose, the conductivity increases rapidly and then tends to become stable, which indicates that the titanium dioxide corrosion layer formed on the surface of the sample surface effectively prevents further corrosion. Meanwhile, XRD and SEM-EDS analysis results show that the main components of corrosion products are TiO2 and TiO. The titanium on the surface of the sample is oxidized, resulting in slight uneven local corrosion. The results show that TA8-1 and TA2 are suitable to be used as candidate materials for high-level waste (HLW) disposal containers due to their excellent performance under long-term and high-dose irradiation corrosion.
资助项目	National Natural Science Foundation of China[51471160] ; National Natural Science Foundation of China[11775102] ; National Natural Science Foundation of China[11965001] ; Fundamental Research Funds for the Central Universities, China (Lanzhou University)[lzujbky-2018-19]
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000655756300001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/176849]
专题	中国科学院海洋研究所
通讯作者	Li, Yuhong; Liu, Yibao
作者单位	1.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China 2.East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Wei, Qianglin,Li, Yuhong,Huang, Yanliang,et al. Corrosion behavior of high-level waste container materials Ti and Ti-Pd alloy under long-term gamma irradiation in Beishan groundwater[J]. CHINESE PHYSICS B,2021,30(5):8.
APA	Wei, Qianglin,Li, Yuhong,Huang, Yanliang,Yang, Dongyan,Yang, Bo,&Liu, Yibao.(2021).Corrosion behavior of high-level waste container materials Ti and Ti-Pd alloy under long-term gamma irradiation in Beishan groundwater.CHINESE PHYSICS B,30(5),8.
MLA	Wei, Qianglin,et al."Corrosion behavior of high-level waste container materials Ti and Ti-Pd alloy under long-term gamma irradiation in Beishan groundwater".CHINESE PHYSICS B 30.5(2021):8.